Incinerator



Jan. -23, 1968 B. F. MCLOUTH INCINERATOR Filed Jan.

/NZ/ENTOX? 514 0655 M 10077/ ;9

United States Patent Ofilice &364,886 Patented Jan. 23, 1968 &364.886 INCINERATOR Bruce F. McLouth, Hopkins, Minn., assignor to Burn-Zoi Inc., Minneapolis, Mina., a corpo'atio of Minnesota Filed Jan. 5, 1966, Ser. No. 518,824 3 Clams. (Cl. 110-8) ABSTRACT OF THE DISCLOSURE An incinerator with upper and lower air cooled doors, and air cooled grates in the fire pot between the doors and the ends of the grates being spaced from the incinerator wall across from the doors to define an opening through which garbage dried on the grates is pushed into the lower area of the fire pot.

This invention relates to an incinerator for disposing of refuse of the type commonly found in public parks and other types of public facilities.

Disposal of refuse in public parks and other similar types of facilities has required maintenance crews to empty garbage cans and carry the garbage and refuse to dumps and other disposal areas. Such garbage collection and disposal service is both expensive and burdensome to the park administration.

An object of my invention is to provide a new and improved incinerator of simple and inexpensive construction and operation.

Another object of my invention is to provide an incinerator which can be safely operated by the public in facilities such as parks and the like so that refuse including wet garbage can be disposed of readily and easily without frequent maintenance service.

A further object of my invention is to provide an improved and novel incinerator which is well adapted for disposing of Wet refuse such as garbage by providing for nitial drying of such refuse and then disposing of it by burning.

These and other objects and advantages of my invention will more fully appear from the following description made in connection with the accompanying drawings, wherein like reference characters refer to the same or similar parts throughout the several views, and in which:

FIG. 1 is a vertical section View of the invention and being taken on a vertical plane, substantially as indicated at 1-1 in FIG. 2.

FIG. 2 is a cross section view, partly broken away for clarity of detail and being taken substantially at 2-2 in FIG. 1.

FIG. 3 is a detail section view taken at 3-3 in FIG. 1.

FIG. 4 is a detail section View taken at 4-4 in FIG. 1.

One form of the invention is shown in the drawings and is described herein. The incinerator is indicated in general by numeral and has a wall structure 11 defining a fire pot 12, a lower portion 12a of which acts as an ash pit. The wall structure 11 comprises a plurality of annular wall sections 13, 14 and 15 which are detachably inner connected with each other in end-to-end relation. The uppermost wall section 15 also defines a top 16 through which an exhaust gas opening 16a is formed. A stack 17 is affixed in alignment with the exhaust opening 16:: and the stack 17 may be of any suitable height as required. Each of the wall sections is provided with an outer steel jacket 13a, 14a and 15a, each of which encompasses the corresponding cast refractory 13b, 14b and 15b. supporting fins or braces 17a are afixed as by welding to the jacket 15:: of the uppermost wall section to the stack 17 for holding the stack 17 in an uprght position.

Access openings 18 and 19 are formed through the wall structure of the upper and lower wall sections 15 and 13 respectively, and outwardly projecting sleeves 20 and 21 are respectively affixed as by welding to the corresponding steel jackets. The sleeves 20 and 21 mount air cooled doors 22 and 23 at their lower edgeson hinges 24 and 25 so that the doors 22 and 23 may swing outwardly on horizontal axes.

Doors 22 and 23 include closure panels or plates 22d and 23a respectively which normally lie against the end edges of sleeves 20 and 21 to obstruct or close the access openings into the fire pot. Each of the doors has a pair of uprght panels or plate 22b and 23b respectively aflixed as by welding adjacent the opposite side edges of the doors 'and extending into the corresponding sleeves to ?sheld the sides of the sleeves 20 and 21 from the radan heat of the fire in the fire pot 12. The sides of the sleeves 20 and 21 are thereby kept to a reasonable temperature as to minimze the likelihood of injury to persons who might happen to touch these sides of the sleeves at the exterior of the incinerator.

Each of the doors 22 and 23 has an air duet panel 22c and 230 respectively afi ixed 'to the outer sides of the panels 226: and 2311 for dening air flow passages 26 and 27. It will be noted that the door 23 has both the lower and upper ends of passage 27 open and unobstructed so that air may readily flow through the passage for cooling the panel 23 and minimizing the likelihood of heating of the handle 28.

The duct panel 226 has a closure 22d at the upper end of air passage 26; but the panel 22a has an air port 29 there through so as to provide open communication between the air flow passage 26 and the interior of the fire pot 12. Combustion air is thereby provided into the fire pot through the air passage 26 of door 22. The combustion air, which cools the door 22 to prevent objectionable heating of the door Operating handle 30, also picks up he at so that the combustion air supplied to the fire pot is :already heated, thereby providing for most efiicient combustion.

A grate 31 comprises a plurality of cantilever tubes 32 which are mounted in the wall section 14 at their front ends and which extend into spaced relation with the opposte side of the wall structure so as to define a disposal opening 33, through which dried refuse and noncombustibles will fall when they are merely pushed rearwardly along the tubes 32 and over the rear ends thereof. The tubes 32 are in open communication at their front ends with the atmosphere at the exterior of the incinerator, and a protective shield 34 is afiixed as by welding to the jacket 14a of the wall section 14.

It will be noted that the parallel tubes 32 have their inner ends disposed directly below the door 23 so that when a quantity of norcombustibles, such as cans or bottles are collected on the grates, a tool may be extended inwardly through the door 23 and the refuse may be merely pushed rearwardly ofi" the ends of the grates.

Because the opening 33 adjacent the rear ends of the grates is essentially unobstructed, a su bstantial quantity of the combustion gases moves upwardly through this opening 33. The inwardly moving combustion air supplied through tubes 32 produces turbulence and additional air for combustion to the combustion gases so as to efiect an efiicient burning of all of the volatiles in the incinerator.

The wall section 13 is also provided with a clean out door 35 mounted on a sleeve 36 extending through the wall section 13. The door 35 is disposed adjacent the ash pit 12a.

The wall section 13 is also provided with port 37 which is normally closed by a removable steel cover plate 38 which is lined with refractory material 38a. This cover plate 38 may be removed and a gas or oil burner may be permanently or temporarily inserted and affixed to &364,886

provide auxiliary beat, if necessary, to dry out garbage or other wet waste. V

In operation, wet garbage and the like will be supplied through the door 23 onto the grates 31. Readily combustible refuse is supplied through the door 22 into the lower portion of the incinerator, the beat from which will dry the garbage onto the grates 31' to permit complete combustion thereof. Bottles and cans which may be collected on the grates for sterilization, by operation of the fire in the lower portion of the incinerator.

In the event that *the grates 31 deteriorate as by rusting, or otherwise damaged, the upper section 15 of the incinerator wall structure may be lifted upwardly, and then the short section 14 of wall structure may be readily and easily removed and replaced With a new wall section so as to replace the grates carried thereby.

It will, of course, be understood that various changes may be made in the form, details, arrangement and proportions of the various parts without departing from the scope of my invention.

I claim:

1. An incinerator for refuse varying from wet garbage to dry trash, comprising an uprightfire pot exhausting combustion gases to a stack, said fire pot having garbage-collecting grates intermediate the top and bottom thereof, said grates having a plurality of parallel members with adjacent ends mounted on the fire pot wall and said members extending across the fire pot with the opposite ends spaced from the fire pot wall and cooperating therewith in defining a disposal opening through which dried refuse and other debris may fall downwardly,

an upper charging door in the fire pot wall and disposed above the grates and across the fire pot from 4 v said opening to facilitate supplying of refuse onto the grates for drying and a lower charging door in the fire pot Wall and disposed below the grates for supplying combustibles below the grates for drying the refuse thereon, said second 'door being space d well above the bottom of the fire pot, the fire pot defining an ash collecting pit below said second door.

2. The incinerator according to claim 1 and including means supplying combustion air into the fire pot below said grates, said parallel members comprsing elongate rigid tubes mounted on and opening through the fire pot wall to supply preheated air into the fire pot and to cool the tubes, and said tubes extendng across the fire pot and into spaced relation with said wall to define said disposal opening through which a substantial portion of the combustion gases pass, the air from said tubes producing turbulence and burning of the remaining Volatile gases.

3. The incinerator according to claim 2 wherein said doors have cooling air passages maintaining the doors sufficiently cool to prevent injury to persons Operating the doors, and said lower door having a port communicating between said passage and the fire pot to supply combustion air for the fire in the incinerator.

- References Cited UNITED STATES PATENTS 228376 6/1880 Bosworth llO--74 %3,765 2/1911 Raggio -18 1,086,854 2/1914 Prescott 110-18 1,259,457 3/1918 Judson et al. 110-18 1,721,936 7/1929 Weber 110-18 3 l90,244 6/ 1965 Hosknson 110-18 JAMES W. WESTHAVER, Pr'mary Exam'ner; 

